26d7b5a4d1
This changeset removes a check that prevents quiescing when an interrupt is pending. *** You should only call quiesce if that isn't a problem. *** arch/alpha/isa/decoder.isa: sim/pseudo_inst.cc: sim/pseudo_inst.hh: Add quiesceNs, quiesceCycles, quisceTime and m5panic pseudo ops. These quiesce for a number of ns, cycles, report how long we were quiesced for, and panic the simulator respectively. The latter is added to the panic() function in the console and linux kernel instead of executing an infinite loop until someone notices. cpu/exec_context.cc: cpu/exec_context.hh: Add a quiesce end event to the execution contexted which upon executing wakes up a CPU for quiesceCycles/quiesceNs. util/m5/Makefile: Make the makefile more reasonable util/m5/m5.c: update the m5op executable to use the files from the linux tree util/m5/m5op.S: update m5op.S from linux tree util/m5/m5op.h: update m5op.h from linux tree --HG-- rename : util/m5/m5op.s => util/m5/m5op.S extra : convert_revision : 3be18525e811405b112e33f24a8c4e772d15462d
267 lines
6.9 KiB
C++
267 lines
6.9 KiB
C++
/*
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* Copyright (c) 2001-2006 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <string>
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#include "cpu/base.hh"
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#include "cpu/exec_context.hh"
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#if FULL_SYSTEM
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#include "base/callback.hh"
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#include "base/cprintf.hh"
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#include "base/output.hh"
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#include "base/trace.hh"
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#include "cpu/profile.hh"
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#include "kern/kernel_stats.hh"
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#include "sim/serialize.hh"
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#include "sim/sim_exit.hh"
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#include "sim/system.hh"
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#include "targetarch/stacktrace.hh"
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#else
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#include "sim/process.hh"
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#endif
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using namespace std;
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// constructor
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#if FULL_SYSTEM
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ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
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AlphaITB *_itb, AlphaDTB *_dtb,
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FunctionalMemory *_mem)
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: _status(ExecContext::Unallocated), cpu(_cpu), thread_num(_thread_num),
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cpu_id(-1), lastActivate(0), lastSuspend(0), mem(_mem), itb(_itb),
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dtb(_dtb), system(_sys), memctrl(_sys->memctrl), physmem(_sys->physmem),
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kernelBinning(system->kernelBinning), bin(kernelBinning->bin),
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fnbin(kernelBinning->fnbin), profile(NULL), quiesceEvent(this),
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func_exe_inst(0), storeCondFailures(0)
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{
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kernelStats = new Kernel::Statistics(this);
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memset(®s, 0, sizeof(RegFile));
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if (cpu->params->profile) {
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profile = new FunctionProfile(system->kernelSymtab);
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Callback *cb =
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new MakeCallback<ExecContext, &ExecContext::dumpFuncProfile>(this);
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registerExitCallback(cb);
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}
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// let's fill with a dummy node for now so we don't get a segfault
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// on the first cycle when there's no node available.
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static ProfileNode dummyNode;
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profileNode = &dummyNode;
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profilePC = 3;
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}
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#else
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ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
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Process *_process, int _asid)
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: _status(ExecContext::Unallocated),
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cpu(_cpu), thread_num(_thread_num), cpu_id(-1), lastActivate(0),
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lastSuspend(0), process(_process), mem(process->getMemory()), asid(_asid),
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func_exe_inst(0), storeCondFailures(0)
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{
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memset(®s, 0, sizeof(RegFile));
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}
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ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
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FunctionalMemory *_mem, int _asid)
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: cpu(_cpu), thread_num(_thread_num), process(0), mem(_mem), asid(_asid),
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func_exe_inst(0), storeCondFailures(0)
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{
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memset(®s, 0, sizeof(RegFile));
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}
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#endif
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ExecContext::~ExecContext()
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{
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#if FULL_SYSTEM
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delete kernelStats;
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#endif
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}
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#if FULL_SYSTEM
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void
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ExecContext::dumpFuncProfile()
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{
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std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name()));
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profile->dump(this, *os);
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}
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ExecContext::EndQuiesceEvent::EndQuiesceEvent(ExecContext *_xc)
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: Event(&mainEventQueue), xc(_xc)
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{
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}
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void
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ExecContext::EndQuiesceEvent::process()
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{
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xc->activate();
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}
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const char*
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ExecContext::EndQuiesceEvent::description()
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{
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return "End Quiesce Event.";
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}
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#endif
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void
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ExecContext::takeOverFrom(ExecContext *oldContext)
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{
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// some things should already be set up
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assert(mem == oldContext->mem);
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#if FULL_SYSTEM
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assert(system == oldContext->system);
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#else
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assert(process == oldContext->process);
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#endif
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// copy over functional state
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_status = oldContext->_status;
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regs = oldContext->regs;
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cpu_id = oldContext->cpu_id;
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func_exe_inst = oldContext->func_exe_inst;
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storeCondFailures = 0;
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oldContext->_status = ExecContext::Unallocated;
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}
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void
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ExecContext::serialize(ostream &os)
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{
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SERIALIZE_ENUM(_status);
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regs.serialize(os);
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// thread_num and cpu_id are deterministic from the config
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SERIALIZE_SCALAR(func_exe_inst);
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SERIALIZE_SCALAR(inst);
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#if FULL_SYSTEM
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Tick quiesceEndTick = 0;
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if (quiesceEvent.scheduled())
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quiesceEndTick = quiesceEvent.when();
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SERIALIZE_SCALAR(quiesceEndTick);
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kernelStats->serialize(os);
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#endif
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}
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void
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ExecContext::unserialize(Checkpoint *cp, const std::string §ion)
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{
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UNSERIALIZE_ENUM(_status);
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regs.unserialize(cp, section);
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// thread_num and cpu_id are deterministic from the config
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UNSERIALIZE_SCALAR(func_exe_inst);
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UNSERIALIZE_SCALAR(inst);
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#if FULL_SYSTEM
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Tick quiesceEndTick;
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UNSERIALIZE_SCALAR(quiesceEndTick);
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if (quiesceEndTick)
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quiesceEvent.schedule(quiesceEndTick);
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kernelStats->unserialize(cp, section);
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#endif
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}
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void
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ExecContext::activate(int delay)
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{
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if (status() == Active)
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return;
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lastActivate = curTick;
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_status = Active;
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cpu->activateContext(thread_num, delay);
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}
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void
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ExecContext::suspend()
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{
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if (status() == Suspended)
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return;
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lastActivate = curTick;
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lastSuspend = curTick;
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/*
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#if FULL_SYSTEM
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// Don't change the status from active if there are pending interrupts
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if (cpu->check_interrupts()) {
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assert(status() == Active);
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return;
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}
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#endif
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*/
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_status = Suspended;
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cpu->suspendContext(thread_num);
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}
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void
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ExecContext::deallocate()
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{
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if (status() == Unallocated)
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return;
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_status = Unallocated;
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cpu->deallocateContext(thread_num);
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}
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void
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ExecContext::halt()
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{
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if (status() == Halted)
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return;
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_status = Halted;
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cpu->haltContext(thread_num);
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}
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void
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ExecContext::regStats(const string &name)
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{
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#if FULL_SYSTEM
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kernelStats->regStats(name + ".kern");
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#endif
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}
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void
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ExecContext::trap(Fault fault)
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{
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//TheISA::trap(fault); //One possible way to do it...
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/** @todo: Going to hack it for now. Do a true fixup later. */
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#if FULL_SYSTEM
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ev5_trap(fault);
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#else
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fatal("fault (%d) detected @ PC 0x%08p", fault, readPC());
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#endif
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}
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